OT: What is your second favorite rivalry in sports?

Army/Navy. There's just something about it all that's so amazing. I always make sure to watch this game. 

My favorite rivalries are all those involving the teams I root for. So excluding Michigan, Tigers, Red Wings, Pistons, Lions, Wolverhampton and Roma.....

Probably Florida St-Miami when both teams werer good. Same state, going after similar prospects, similar records of success. Lots of friends or past acquaintences playing against each other. 

When I was a kid:

Georgia-Georgia Tech

Georgia-Auburn

Braves-Dodgers (back when they were both in the NL West)

Later on:

Braves-Mets (especially during the Larry "Chipper" Jones years - classic Chipper (paraphrased) quote: "No, it doesn't bother me. That's my name.")

Georgia-Florida

Now:

Michigan-michigan state in any sport

Michigan-notre dame (football)

Least favorite:

Yankees-Red Sox (OMG ESPN, do you have to play up every single yanks-sox game during the regular season as some sort of titanic clash of the century of the year of the week of the day?)

I went to UF-FSU in the 90s. Intense hatred.

Miami vs. Florida St in football and Duke-North Carolina in basketball.

That's some conversation for yo ass

That's some conversation for yo ass

First thought was also Habs - B's, that's a great one. 

Federer - Nadal was my favorite a couple years back.